Granted Patent
Utility
US 4,916,539 · App. 07/323,089
Communications system having receivers which can be addressed in selected classes
Inventor:
Alan D. Galumbeck
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Mar 14, 1989
Inventor
Alan D. Galumbeck
Assignee (at issue)
The Weather Channel, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.